Reinforced concrete structural elements, foundations and buildings erected using the technology of monolithic pouring imply the mandatory use of steel reinforcement. Like most types of rolled metal products, it can be produced in 2 main ways:
- Hot rolling technology.
- Cold forming method.
At the same time, cold-deformed reinforcing bar is supplied to construction organizations on order due to its high demand. This type of reinforcement is classified according to the dimensional parameters and format of the external geometry (the full catalog is presented here https://nlmk.shop/catalog/pipe/profile-pipe/ on the official website of the NLMK group of metallurgical companies). But, it has a number of advantages over analogues obtained by hot rolling. These include:
- Can be made and wound on coils, which greatly facilitates transportation, storage and excludes waste from direct use.
- Mechanical seal in the cold rolling process gives the product higher weldability and toughness properties.
- Reduced carbon content (hot-rolled bar is saturated with it during heating) increases durability and improves the design (allowable) compression-tension.
All of the above indicators (especially good weldability using electric or gas welding equipment) make it possible to use various types of cold-rolled reinforcement for erecting frames of future objects for pouring concrete directly on construction sites.
Ordering cold rolled bars
There is a fairly large number of construction technologies, which provide for the mandatory use of exactly cold-rolled types of reinforcement, for example, class B500C GOST R 52544 - 2006. Indicators of durability, elasticity and strength are included in the design calculations, and hot-rolled products of class A3 can be replaced with B500 without agreement with the designers.
You can get acquainted with the cost and order the required assortment of cold-rolled rebar on the website of the domestic steel group NLMK ( https://nlmk.shop/catalog/long-products/rebar-in-coils/). All products presented in the online catalog correspond to the GOST parameters established today. The availability of the option of feedback with the technical consultant of the project will help the customer to choose the type he needs, place an order and delivery to the address indicated by him.